Liquid-measuring apparatus



Patented Mar. 29, 1927.

UNITED. STATES I 1,622,715 PATENT OFFICE.

JOHN J. nawxnunsr, or BROOKLYN, NEW YORK, assrenon or ONE-FOURTH 'ro M. JAY SAGE, ONE-FOURTH TO FREDERICK W. LANG, BOTH OF BROOKLYN, NEW YORK, AND ONE-FOURTH TO GEORGE W. STEDWELL, OF NEW YORK, N. Y.

Application filed Kay 11 The present invention relates articularly to apparatus for measuring liqui s of a more or less volatile type such as gasoline. Difficulty has been experienced in metering liq- 6 uids of this character and various expedients for disposing of entrapped air and handling the liquid to secure a true reading have been proposed without real success, so far as known, to date. Special objects of the invention are to effect accurate measurement of gasoline or other liquids andto accomplish this with a simple, practical and inexpensive form of device particularl suited to use in combination with the ifi'erent kinds of apparatus now employed for the delivery and dispensing of such liquids.

These objects. are attained in part by a LIQUID-MEASURING APPARATUS.

, 1926. Serial No. 108,242.

with liquid and provide a trap or liquid seal at both inlet and outlet sides of the is designated 7 and is shown as a relatively deep chamber having the inlet entered-"in one side of the same at a point considerably above the bottom at approximately mid length of the chamber. The inlet arm 4 oi: the metersealing loop is entered in the bot- .tom of therchamber and-a vent pipe 8 is shown entered in the top of the chamber. This vent pipe is open to atmosphere, as shown. at 9 at a point above the level of the liquid source so that air will escape freely novel combination of surge or settling cham With t loss of any liquid.

her, air venting connections and liquid seal a means b which the air is vented so that only solid liquid passes to the meter and at a proper flowrate for accurate operation of the meter and whereby a liquid seal is provided at both sides of the meter and siphoning of the meter isprevented.

Various other novel features of construction, combinations and relations of parts en-. terin into and included in the lnvention 30 are escribed in' the following specification and broadly covered in the appended claims. The drawing accompanying and forming part of this specification illustrates the basic features of the invention by means of a broken part sectional elevation of the apparatus "as combined with an ordinar or standard form of meter. In this view the inlet vided by a connection piping 1 and the outlet 1lar piping 2. Such piping may vary with the size, capacity and use of the ap aratus and may be in the-form of flexible hose or the'like, according to different requirements.

A suitable flow meter is indicated at 3 interposed between the inlet and outlet connections, the actuating portion of said meter being shown as connected in the lower portion of a downwardly extending loop formed by piping 4, 5. The outlet is connected with the outlet arm of this loop at the level of the line 6 and the inlet is disposed at a level considerably above thisgline so that both sides of the loop will remain filled or supply is proshown as ordinary. is indicated as sim- Within the chamber 7 and across or opposite the inlet there is shown an upwardly curved bafiie 10 which has the effect of delaying or diverting the incoming'rush of liquid and directing it "upwardly so that entrained or entrapped air willpass 01f immediatcl This baflle also serves to establish a llquid level in the casing substantially at '11 and to provide a relatively deep well below this level for a body 12 of solid .de-aired and substantially non-turbulent liquid. The depth of thiswell may be substantially in the proportions shown so as to provide it slight head for overcoming the friction and operating the meter at a normal and true registering speed. The meter therefore, operates under the head of a solid body of liquid rather than .under theforce of a sudden rush of liquid.

To prevent the outlet 2 from siphoning oil. the liquid seal, said outlet is rovide with a. vent 13 which may be com ined at the top with the vent 9.

The apgaratus is particularly suited for gasoline ispensing stations, tanks, tank wagons and the like and may be connected inzservice without changing such appa-- ra u y and throwing the deaired or solid liquid to drop back in the well Where it becomes part of the head flowing to the meter. A part or all Oftlle head will remain if the flow is cut oil at the outlet side of the meter and if the flow is cut off at the inlet side, the seal will still be retained so that in either event the meter will be in condition to start with solid liquid the next time of delivery. I

Substantially complete de-airing is effected in the surge chamber. The immediate reduction in velocity permitted by the sudden increase in size of the liquid transmitting conduit allows the li uid to expand and lose its'velocity. This re notion in velocity, which in the illustration amounts to a drop of about ten to one, gives ample time for pract cally complete de-airing and maintains a solid head'of liquid for operating the meter.

It is usually advisable to strain the liquid before it enters the meter and this is ef-. fected in the illustration by providing a screen where the supply pipe enters the surge chamber as clearly shown in the drawing'. This strainer may be of a type to" automatically remove the water so that there ,will be no danger of the system freezing up and throwing the apparatus out of order.

What is claimed is:- 1. In liquid measuring apparatus, an enlarged settling and de-airing chamber having a liquid inlet in one side, an air vent in the top and a li uid outlet in the bottom of the same, a liqui meter connected with said outlet and a non-siphoning discharge connection from said meter, the connections from the settling chamber and the outlet from the meter bein formed as" the arms of an upwardly exten 'n 100 for retaining a liquid seal at both si es 0 the meter, the liquid entrance in the settling chamber being disposed at a level above the level of the discharge outlet from the meter and arranged to enable the fluid entering the same to 0w upwardly and to then settle back and form a relatively deep well of solid liquid providing a head for operating the meter. v

2. In liquid measuring apparatus, an enlarged settling and de-airing chamber having a; liquid inlet and a wall defining a deep setting well separated from the inlet flow of liqu1d, said chamber having an air vent at the top in communication with both the inlet and the well and provided with a liquid outlet at the bottom leading off from said well, a flow meter connected with said,

outlet, a non-siphoning discharge connection from said meter, the outlet connection from the well and the outlet from the meter being formed as the arms of an upwardly extending 100 for retaining a liquid seal at both sides 0 the meter, the liquid inlet and the well in the chamber being so related to each other and to the outlet from the meter as to produce a level of liquid in the well higher than said meter outlet to serve as a head for operating the meter.

In witness whereof, I have hereunto set my'hand this 21st day of April, 1926.

JOHN J. HAWX 1 I ST.

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